A silly little word made by Neil Cicierega from the song Sky Is Not Blue. Meaning a "past possibility that no longer applies."
"I might have been a has-might-have-been"
To be full of queefs. A queef is when air is released from a vagina. This verb is positive, similar to the word gleeful or joyful.
Wow, I just got $100! This information makes me feel very queeful!